(…) One advantage of using genetic engineering to help crops adapt to these sudden changes is that new varieties can be created quickly. Creating a potato variety through conventional breeding, for example, takes at least 15 years; producing a genetically modified one takes less than six months. Genetic modification also allows plant breeders to make more precise changes and draw from a far greater variety of genes, gleaned from the plants’ wild relatives or from different types of organisms. Plant scientists are careful to note that no magical gene can be inserted into a crop to make it drought tolerant or to increase its yield—even resistance to a disease typically requires multiple genetic changes. But many of them say genetic engineering is a versatile and essential technique.
“It’s an overwhelmingly logical thing to do,” says Jonathan Jones, a scientist at the Sainsbury Laboratory in the U.K. and one of the world’s leading experts on plant diseases. The upcoming pressures on agricultural production, he says, “[are] real and will affect millions of people in poor countries.” He adds that it would be “perverse to spurn using genetic modification as a tool.”